Speaker Popping/Crackling Noise

Was hoping for a little troubleshooting help. I changed my set up from the following arrangement:

CRT TV on Salamander stand, receiver/cable/DVD/CD player in stand, speakers on bookshelves to:

a plasma tv on a new BDI Marina media cabinet, the speakers to either side of the tv (close, only a few inches away) and the electronics in the cabinet.

So every once in a while, the speakers emit a little pop or crackle noise, kind of like record static. It happens a lot more when the TV is on, but also with music and the tv off. I first figured that it was because the speakers, being on a lower plane than before, had their wires too close to the rest of the systems wires, so I tried to get the wires up out and out of the way of everything else, but this hasn't really helped. I'm guessing it's something to do with either wire or tv interference rather than anything with the actual equipment, but I was looking for some opinions.